Applic.
pp. 4-8
Contents
p. 2
Selection
pp. 9-11
Products
pp. 12-87
GenRad
products
pp. 50-87
Reference Standard
Capacitor
Index
p. 89
1408-9706 Capacitor Series
Ultra-high stability. The continuously improving accuracy of capacitor calibrations by NIST
brings a better knowledge of capacitance to
standards laboratories - provided, of course,
the laboratories have adequate reference
standards. The 1408 Reference Standard Capacitors, with their high stability, are suitable
for calibration in parts in 107. The 1616 Precision Capacitance Bridge is highly recommended
for accurate calibration of a wide range of
working standards from such a reference.
10 pF and 100 pF combination
This unit includes two standards, 10 pF and
100 pF, plus a self-contained air bath whose
temperature is held constant to within 0.01
per year to assure the utmost stability of the
standards. Since ti carries its own environment, it is well adapted for use in laboratories
without an oil bath or closely-controlled ambient temperature or in portable laboratories
and calibration centers. The air bath operates
from 12 volts so that it is an easy matter to
transport it under power at all times.
Low voltage coefficient
High stability
SPECIFICATIONS
Nominal Value: 10 pF and 100 pF.
Calibration: A certificate of calibration is supplied with each
capacitor, giving the measured direct capacitance at 1 kHz and at
the specified temperature near 30°C, the air-bath temperature. The
measured value is obtained by a comparison to a precision better
than 0.5 ppm with standards whose values are determined and
maintained by periodic calibrations made by NIST.
Adjustment Accuracy: ±5 ppm.
Stability: Estimated to be better than 1 ppm per year.
Temperature Coefficient: 2 ±2 ppm/°C for 100 pF;
5 ±2 ppm/°C for 10 pF.
Temperature Cycling: from 0 to 60°C, < 1 ppm hysteresis at 30°C.
Electrical:
Dissipation Factor: < 10-5 at 1 kHz.
Voltage: 750 V max.
Residual Impedances: See Figure 1
Value
(pF)
LH, LL
(μH)
CD
(pF)
CH
(pF)
CL
(pF)
10
0.05
100
30
28
100
0.05
100
30
28
Terminals: Two locking G874 coaxial connectors or BNC connectors; various patch cords available.
Air-Bath Characteristics:
Temperature: 30°C nominal with stability of 0.01°C/year,
<0.005°C/hour if ambient temperature is kept within 1°C.
Temperature Coefficient: 0+0.05ppm/°C from 17 to 29°C
ambient temperature; thermometer well provided for calibration.
General: Connectors can be made to the front or the rear as your
application dictates. A 12-volt input is provided to maintain a constant air-bath temperature even while the unit is in transit.
Power: 105 to 125 V or 210 to 250 V, 50 to 60 Hz, 5 W; 12 V at 0.4
A; for dc operation, battery connectors provided on rear.
Mechanical:
Fig.1
Dimensions: 22.2 cm H x 21.4 cm W x 40.7 cm D
(8.72" x 8.42" x 16"); (approx.)
Weight: 12 kg (25 lb.) net, 16 kg (34 lb.) shipping; (approx.)
ORDERING INFORMATION
1408-9706
10/100 pF Air bath Reference Standard Capacitor
IET LABS, INC. in the GenRad Tradition
534 Main Street, Westbury, NY 11590
www.ietlabs.com
TEL: (516) 334-5959 • (800) 899-8438 • FAX: (516) 334-5988
Electronic cat/1482/09-15-03
57